This Mp3 sound module version of V1.1 is updated version of V1.0 and have all of the function of V1.0.And the V1.1 has a delay by default, but if you don't need the delay, you can remove the delay in a very easy way as below : "please don't detest the signal of "busy control", then there is no any delay, it is very easy to change in the code".

Please notice that we will ship MP3 SD Card Sound Module With Two-Line Serial Control Mode by default, and if you need any other mode, please leave us message or let us know when you check out .

The SD card are not include in this item list, the SD card in the picture is just to help customer to find the correct SD card for this item.Features :

WTV020-SD voice module adopts WTV020SD-20SS as core procesing chip. It supports MP3 control mode、Key control models (5-voice)、Loop play mode and two-line serial control mode . Control mode is set while producing, which can not be changed through configuring.

2、Key control mode (5 voice): Support three sub-control methods as below :

1) Key can be duplicate-triggered by pulse ; 2) All keys are Play/Stop trigger (No single recycled) ; 3) All keys are Play/Stop trigger (Single can be recycled).

3）Loop play mode: After powered on, no need to trigger any I / O port, directly play all the voice in SD card, with functions to record playing points while power off, from which it plays while powered on again. Two sub-control modes, 1. P04 has pulse-triggered play/pause function; 2. P05 has level-triggered play/pause function.

4）Two-line serial control mode: controlled by MCU clock via CLK and DI data lines. Free to play voice at any address. In this mode, it has voice combination play function.